In 1939 we1 reported on the status of glandular therapy in patients with undescended testes and compared our results with those reported in the literature. In contrast to the 61 per cent of successful results of other observers we were able to produce descent in only 20 per cent of our cases and in only 27 per cent of those occurring in patients under 16 years of age. We were not able to produce descent in any instance in which the testis was intra-abdominal, although a high incidence of successful results (55 per cent) had been reported in patients with testes of this type. We concluded that glandular therapy would produce descent only in those testes which would descend by the time of puberty without treatment; namely, those which were not retained by mechanical factors. Nevertheless the treatment appeared valuable because it made it possible to determine at an